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Issue 11, 2012
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Photoionization and imaging spectroscopy of rubidium atoms attached to helium nanodroplets

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Abstract

Highly excited states of rubidium (Rb) atoms attached to helium (He) nanodroplets are studied by two-photon ionization spectroscopy in combination with electron and ion imaging. We find high yields of RbHe and RbHe2 exciplexes when exciting to the 4D and 6P bands but not at the 6S band, in accord with a direct formation of exciplexes in binding RbHe pair potentials. Photoion spectra and angular distributions are in good agreement with a pseudodiatomic model for the RbHeN complex. Repulsive interactions in the excited states entail fast dissociation followed by ionization of free Rb atoms as well as of RbHe and RbHe2 exciplexes.

Graphical abstract: Photoionization and imaging spectroscopy of rubidium atoms attached to helium nanodroplets

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Article information


Submitted
27 Aug 2011
Accepted
18 Jan 2012
First published
13 Feb 2012

Phys. Chem. Chem. Phys., 2012,14, 3843-3851
Article type
Paper

Photoionization and imaging spectroscopy of rubidium atoms attached to helium nanodroplets

L. Fechner, B. Grüner, A. Sieg, C. Callegari, F. Ancilotto, F. Stienkemeier and M. Mudrich, Phys. Chem. Chem. Phys., 2012, 14, 3843
DOI: 10.1039/C2CP22749E

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